General formulas for calculating magnetic field at a receiving loop placed at an arbitrary position from a radiating loop in a shielded room

Author

Nakane, Hiroshi ; Maruyama, Hitoshi ; Omori, Shunichi ; Yokoshima, Ichiro

Author_Institution

Dept. of Electr. Eng., Sci. Tokyo Univ., Japan

Volume

37

Issue

2

fYear

1988

fDate

6/1/1988 12:00:00 AM

Firstpage

268

Lastpage

273

Abstract

The standard magnetic field radiated by a small loop antenna is used for sensitivity testing of radio receivers. To avoid interference from external sources, the test is often carried out in a shielded room. A formula to obtain the intensity of the magnetic field at the receiving loop, when a small radiating loop antenna and the receiving loop antenna are placed at random locations in a shielded room, is derived. The convergence of the formula is analyzed. Using the formula, an equation is derived which expresses the shielded room error or the effect of the room on the standard magnetic field. The correlations between the calculated values of the error and the measured results are reported

Keywords

electronic equipment testing; loop antennas; magnetic field measurement; magnetic fields; magnetic shielding; measurement errors; radio receivers; receiving antennas; convergence; error; intensity; magnetic field; radio receivers; random locations; receiving loop; sensitivity testing; shielded room; small loop antenna; Convergence; Equations; Interference; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic shielding; Receivers; Receiving antennas; Testing;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.6064

Filename

6064